Home / 78,982.76-118,480.26-26,392.43

Finding the Fourth Proportional to 78,982.76, 118,480.26 and 26,392.43

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Solution

The fourth proportional to 78,982.76, 118,480.26 and 26,392.43 is: 39,590.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,982.76 : 118,480.26 = 26,392.43 : x
  2. Step 2: Convert to fraction form
    78,982.76/118,480.26 = 26,392.43/x
  3. Step 3: Cross multiply
    78,982.76x = 118,480.26 × 26,392.43
  4. Step 4: Simplify right side
    78,982.76x = 3,126,981,606.25
  5. Step 5: Solve for x
    x = 3,126,981,606.25/78,982.76
  6. Step 6: Final answer
    x = 39,590.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.